mung bean

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. An Asian plant (Vigna radiata) in the pea family, widely cultivated for its edible seeds and pods. It is the chief source of bean sprouts.
2. n. The seeds or pods of this plant.

Wiktionary

1. n. the seed of Vigna radiata which is native to Bangladesh, India, and Pakistan

GNU Webster's 1913

1. n. The mung (Vigna radiata).
2. n. The bean produced by the mung.

WordNet 3.0

1. n. erect bushy annual widely cultivated in warm regions of India and Indonesia and United States for forage and especially its edible seeds; chief source of bean sprouts used in Chinese cookery; sometimes placed in genus Phaseolus